Option to set an alternative passcode ("double bottom") that either opens a limited set of chats, opens a different account, or destroys one of the connected accounts completely when entered.
Use cases
Could be used by political activists in opressive countries when they are required to unlock their chats.
Potential issues
If such an emergency passcode is set, the app won't be able to use your fingerprints or other biometric data to unlock chats. As a result, the absense of biometric unlock could be used a clear indicator that a person has something significant to hide – and it becomes impossible to prove this is not the case.
This might provide a false sense of security and might actually make the situation worse for an activist's or an innocent bystander.
Along that line a specific finger print will do the same
Jahus
That's called plausible deniability. You'd need to make that "double bottom" plausible. I think it should work both with PIN unlock and master password. It would unlock to the fake profil whenever the second pass is entered.
Kaworu
"the app won't be able to use your fingerprints or other biometric data to unlock" It is possible to link different fingerprints to different passwords, i.e. the main password to the index finger, the false password to the thumb, but I am not sure whether Telegram can receive such information, or whether it is only available to the system. Well, all phone owners without a fingerprint will have to put up with this
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It is possible to link different fingerprints to different passwords, i.e. the main password to the index finger, the false password to the thumb, but I am not sure whether Telegram can receive such information, or whether it is only available to the system. Well, all phone owners without a fingerprint will have to put up with this